My iphone 4 is refusing to work?

Last week my iphone 4 was working like normal until suddenly the battery just stopped working, so i had to buy a new battery, after installing the new battery my iphone is still refusing to charge, whenever i try to charge it through a main socket it says i have 100% but when i disconnect it from the mains it refuses to turn on, however when i plug it into the mains it tells me to connect to itunes but whenever i disconnect it from the mains and plug it into my computer it still refuses to turn on and the battery still won't charge, any help?

Sounds like the main boards gone on it. Look on ebay for repair companies or time to get a new phone i'm afraid.

Get a new battery from Apple

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